Nothing on keypad for my microwave works

That would be a failed keypad, but the part is no longer available.

- Ed Miller
http://www.microwavecontrol.com

Go for a warranty repair anyway. It may be the magnetron, and the clicking is the big condenser discharging.
https://www.lg.com/ca_en/support/warranty
Microwave Ovens (Over-the-Range):

• 1 year parts & labour
• 5 years on the magnetron (part only)

Microwave Ovens (countertop):

• 1 year replacement warranty
• 5 years on the magnetron (part only)

see the causes and fix it. God bless you
Touchpad dead If you have a stuck key or non-responsive key, most of the time you will have to replace the keypad for this microwave oven repair. If your keypad is connected to your control board by a flat ribbon wire, try disconnecting it and clean the silver contacts with an ordinary pencil eraser. After cleaning, plug it back in and try it. If it doesn't fix it, replace the keypad unit. Some units actually have keypad tests to confirm your diagnosis of a bad key.If your keypad and control is the same unit, replace that unit. Another note, unlike stove/oven keypads and controls, most microwaves do not have error codes or tests to distinguish whether it is truely the keypad or control. Most of the time, it is the keypad that needs replacing, but a small percentage of the time it can be the control. Check the tech sheet if they can point you to the right part.

No! I'am afraid not, the problem is in the keypad control board, the whole assembly must be replaced, the part alone will cost around $100.00 or more depending on make and model.

I would strongly consider replacing the microwave oven, prices have dropped considerably. The problem you are describing is in the keypad controller board.

HOW TO FIX THIS PROBLEM error Ox80280007

Sounds like you have a faulty control panel. I would use a meter and test the power from the control board to the magnetron and circuit board. Chances are the control panel is faulty

Hi! the problem you have mentioned indicates that your microwave magnetron is not working. check for blown fuse.

try another wall outlet.